| Abstract Scope |
The fabrication and laser-assisted machining (LAM) of nanoparticle-reinforced fused silica-based ceramic composites represent a significant advancement in producing high-precision components for defense and industrial applications. This study examines the influence of Nd:YAG laser parameters on machinability and surface integrity. The ceramic composite is fabricated using gel casting and sintering, with nanoparticles uniformly dispersed in the fused silica matrix. During laser-assisted machining, a high-power Nd:YAG laser preheats the composite, optimizing cutting conditions to enhance material removal and minimize subsurface damage. Machining is performed using a polycrystalline diamond cutting tool, with laser power, feed, depth of cut, and speed analyzed for their effects on machinability. SEM and TEM analyses reveal that LAM significantly enhances machinability, reduces tool wear, and improves surface finish. Preheating reduces brittleness and microcracking, enabling smoother cuts. This study establishes LAM as an effective technique for fabricating nanoparticle-reinforced composites with superior surface integrity. |